For WhatsApp history, you have to make sure that WhatsApp is setup to backup to iCloud. You can do this inside WhatsApp. Open WhatsApp then go to Settings > Chats > Chat Backup. Then on Auto-Backup, then tap "Back Up Now". It will start syncing the chats with iCloud.
Then go to Settings > iCloud > Backup > Backup Now.
After you do that, within 24 hours the chats should start appearing in your TeenShield account.